Sofirn SC31 PRO, New Anduril Flashlight

[TimMc]

Has anyone noticed high parasitic drain on a recent batch of SC31 Pro’s?

https://www.reddit.com/r/flashlight/comments/qe9ern/sofirn_sc31_pro_draining_batteries_without_use/

Sofirn kindly sent me an SC31 Pro for free that someone had returned as faulty to Amazon Australia.

I factory reset it. The Sofirn 18650 cell was 0.6V (measured with DMM).

I inserted a Samsung 30Q 4.17V and the torch works.

But I measured 250mA parasitic drain while the switch LED was off.

It has a burnt electronics smell near the head.

[LightTheWay]

@TimMc

Has anyone noticed high parasitic drain on a recent batch of SC31 Pro’s?

https://www.reddit.com/r/flashlight/comments/qe9ern/sofirn_sc31_pro_draining_batteries_without_use/

Sofirn kindly sent me an SC31 Pro for free that someone had returned as faulty to Amazon Australia.

I factory reset it. The Sofirn 18650 cell was 0.6V (measured with DMM).

I inserted a Samsung 30Q 4.17V and the torch works.

But I measured 250mA parasitic drain while the switch LED was off.

It has a burnt electronics smell near the head.

ordered one in november, from ali. seems to work fine, no smell, i leave the light on, its been on a week.

mine was ordered in november. 45 micro amps (not mA, that showed around . 04) with switch light off

[TimMc]

Here are some photos of the driver:

[LightTheWay]

you realized its burned right? im not sure since you didn’t say anything but that black stuff is a failed component.

[TimMc]

@LightTheWay

you realized its burned right? im not sure since you didn’t say anything but that black stuff is a failed component.

Inductor exploded? Worth getting a cheap hot air station and finding a replacement part? :student:

[LightTheWay]

@TimMc

@LightTheWay

you realized its burned right? im not sure since you didn’t say anything but that black stuff is a failed component.

Inductor exploded? Worth getting a cheap hot air station and finding a replacement part? :student:

looks burned, badly. at 22 dollars, I honestly would say no, But I have a hot air station, so its up to you, does great heat shrinking as well

They may sell the driver boards separately on ali.

[Lightbringer]

@TimMc

But I measured 250mA parasitic drain while the switch LED was off.

It has a burnt electronics smell near the head.

Yeeeeeah, something tells me that’s not normal.

Unseat, jiggle, reseat all rings, drivers, etc.? Maybe something’s pushing on something that’s at least partly shorting out.

[Jan910]

@TimMc

@Tom E

You could though leave it like I have it to re-program. You can get access to the MCU this way. The FET is somewhat buried behinf the USB-C connector.

Is it possible to pull the driver down and attach a SOIC8 clip to update Anduril without removing the bezel for the reflector or desoldering? I managed to remove the rubber switch cover with my fingers and then used circlip pliers to remove the switch bezel. !https://i.imgur.com/f3UMM1k.jpg!

Is the switch frame glued?

[BLF-L]

Hello guys,

I purchased two SC31 Pro’s back in August of 2020. One of them is still 100% OK as good as new, except for some normal wear of the anodization. The other one is still working OK, but the button LED is dead.

Recently I purchased SC21 Pro. This is a great little flashlight. It’s still Andúril 1 though. I have a plan to Reflash Andúril 2.0 .

After years of using SC31 Pro my main preferences for EDC flashlight : Andúril, button-LED, magnetic tail cap. And integrated USB-C charging.

I also have a Wurkkos TS10, Andúril 2.0 .
It doesn’t have button-LED but the Aux LEDs are great as locator. And the tail switch is so fun and tactile.

Thanks Sofirn and Wurkkos for your great flashlights.

I also have a Sofirn HS10 , a fun little head lamp. I really like the integrated USB-C charging.

[BLF-L]

Is the new SC31 Pro better than the old version?
(with Andúril 2.0, attiny1616, exposed flashing pad)
Is it compatible with USB-C to USB-C charging? The old one can only be charged with USB-A to USB-C.

[Couchmaster]

Can’t say about that BLF-L, but as noted on another thread, under $18 WITH battery, is an insane deal and a BLF superstar for what it is/price performance. I love this light and just bought 2 more. Link here: https://www.aliexpress.us/item/3256804979640708.html?spm=a2g0o.productlist.main.1.4344482aVfMs6i&algo_pvid=c9040068-256e-45db-8038-ad8e19ee56be&algo_exp_id=c9040068-256e-45db-8038-ad8e19ee56be-0&pdp_npi=4%40dis%21USD%2156.74%2117.59%21%21%2156.74%21%21%402101f49317048531900396133eea9e%2112000031941446470%21sea%21US%21799170465%21&curPageLogUid=rI5bDKoqj3C1&utparam-url=scene%3Asearch%7Cquery_from%3A

[INeedMoreLumens]

@BLF-L

with Andúril 2.0, attiny1616, exposed flashing pad

Yes, they now have T1616 and flashing pads:

[xevious (Gary)]

I was looking at the SC31T, which is just $13 USD (with battery), but for $5 USD more to get Anduril in the SC31 Pro? No brainer, IMHO. Unless of course, you want a non-Anduril flashlight for a muggle.

[INeedMoreLumens]

@xevious

Unless of course, you want a non-Anduril flashlight for a muggle

I think the 2 switches on the SC31T might be confusing for a Muggle.
I think the SC18 would be a cheaper and better choice for a Muggle.

I currently have 4 SC31 Pro, one of which I will be turning into a Triple.

[xevious (Gary)]

@INeedMoreLumens

I currently have 4 SC31 Pro, one of which I will be turning into a Triple.

Interesting. Is the diameter about the same as an FW3A? Are you leveraging an existing MCPCB for the mod? Is it a conversion others have already done?

[INeedMoreLumens]

I will use a Carclo 105xx triple optic which is the same optic the FW3A uses.
However the MCPCB is a 20mm triple that is custom machined smaller to fit inside the SC31 Pro.
I will also be using a custom machined copper spacer.

Yes, others have done this before.

Here’s some pictures of one that I did for a buddy of mine(he stripped and polished it) I added the triple and added aux:

[xevious (Gary)]

@INeedMoreLumens

I will use a Carclo 105xx triple optic which is the same optic the FW3A uses.
However the MCPCB is a 20mm triple that is custom machined smaller to fit inside the SC31 Pro.
I will also be using a custom machined copper spacer.

Yes, others have done this before.

Here’s some pictures of one that I did for a buddy of mine(he stripped and polished it) I added the triple and added aux:

Fantastic work! Looks amazing. Total class above stock.

[INeedMoreLumens]

I just found a pic, the MCPCB is machined down to 18mm to fit into the SC31 Pro:

[Mco77]

Interesting. Do you know which anduril firmware is used (hw model)?

[INeedMoreLumens]

SP36 t1616

I recently flashed mine with “anduril.2023-12-03.sofirn-sp36-t1616.hex”